PDF save in Browser?

[mohanasundaram muthukannan]

Hi,

i write an application in which a pdf is generated and send to the browser.
The PDF is generated with iReport 3.0. Generate the pdf and save it works fine.

Some times generate pdf is working fine but save not working...

the following error message is thrown

java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:313)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:688)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:658)
at org.apache.jsp.jr.jrcommonjsp.showJR_jsp._jspService(showJR_jsp.java:689)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at com.scholar.common.Controller.doPost(Controller.java:194)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at com.scholar.jr.common.EduJRController.doPost(EduJRController.java:271)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at com.scholar.common.Controller.doPost(Controller.java:194)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Unknown Source)
12:34:36,171 ERROR [[Controller]] Servlet.service() for servlet Controller threw exception
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:313)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:688)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:658)
at org.apache.jsp.jr.jrcommonjsp.showJR_jsp._jspService(showJR_jsp.java:689)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at com.scholar.common.Controller.doPost(Controller.java:194)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at com.scholar.jr.common.EduJRController.doPost(EduJRController.java:271)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at com.scholar.common.Controller.doPost(Controller.java:194)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Unknown Source)
12:34:36,171 INFO [STDOUT] .........................................
12:34:36,171 INFO [STDOUT] Exception org.apache.jasper.JasperException: Exception in JSP: /jr/jrcommonjsp/../../commonjsp/errorfooter.jsp:17



my code is

  

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Vector;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.SingleThreadModel;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRBeanArrayDataSource;
import net.sf.jasperreports.engine.util.JRLoader;

import com.scholar.common.Com_AuthenticatorEntity;
import com.scholar.jr.admin.Admin_JRControlDB;
import com.scholar.jr.admin.Admin_JRControlEntity;
import com.scholar.xmlparser.EnvironForMenu;

public class EduJRController extends HttpServlet implements SingleThreadModel {

	EduJRContainer jrData = null;
	JasperReport jasper = null;
	Map<String, Object> parameters  = null;
	String FilePath = "";
	JasperPrint jasperPrint=null;

    public void doPost(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException   {
        ServletContext context = getServletContext();
        HttpSession session = request.getSession(true);
        response.setContentType("text/html");

        FilePath = context.getRealPath("/images/util/blank.gif");
		String jrcontrol = (String)request.getParameter("jrcontrol");
		Com_AuthenticatorEntity aent = new Com_AuthenticatorEntity();
		if (session != null) {
			aent = (Com_AuthenticatorEntity)session.getAttribute("aent");
	    }
		String menuno = (String)session.getAttribute("menuno");
		String urlToForward ="../servlet/Controller?control=jr101&menuno="+menuno;
		
        try	{
            synchronized (request) {
			    
			Admin_JRControlEntity ajrce = (Admin_JRControlEntity)Admin_JRControlDB.view(jrcontrol);
			createJRBeanInstance(ajrce.getBeanpackage());	
			String hiddenContent = "<input type='hidden' name='jrcontrol' value='"+jrcontrol+"'>";
			hiddenContent+=jrData.populateJR(request);
			request.setAttribute("hiddenContent", hiddenContent);	
			String jasperFilePath = "";
			
			if(request.getParameter("type") == null || request.getParameter("type").equalsIgnoreCase("HTML")){
			    jasperFilePath = context.getRealPath(ajrce.getJasperpath() + "Html.jasper");
			}
			else {
			    jasperFilePath = context.getRealPath(ajrce.getJasperpath() + ".jasper");
			}
			
            try {
                jasper = (JasperReport)JRLoader.loadObject(jasperFilePath);
            } catch(Exception e) {
                // To use only a single jasper file.
                jasperFilePath = context.getRealPath(ajrce.getJasperpath() + ".jasper");
                jasper = (JasperReport)JRLoader.loadObject(jasperFilePath);
                System.out.println("Single Jasper file for Both HTML and PDF Display - Loaded.");
            }
            
			setParameters(request);
			jasperPrint = JasperFillManager.fillReport(jasper, parameters, new JRBeanArrayDataSource(jrData.getBeanArray()));
			
			request.setAttribute("jasperPrint", jasperPrint);
            }
		} catch(Exception e) {
			System.out.println("Exception while retriving Data for Jasper(EduJRController) :  " + e);
			String errorstring = "";
			aent.setMessageflag("error");	
			errorstring = e.toString();
			int pos = errorstring.indexOf("Is");
			if(pos!=-1) {
				errorstring = errorstring.substring(pos+3,errorstring.length());
			}
			aent.setMessage(errorstring);
			urlToForward = "../servlet/Controller?control="+aent.getControlno()+"&menuno="+menuno;
		}

		request.getRequestDispatcher(urlToForward).forward(request, response);
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException   {
		doPost(request,response);
	}

	private void createJRBeanInstance(String packagename) throws Exception {
			jrData = (EduJRContainer)Class.forName(packagename).newInstance();
	}

	private void setParameters(HttpServletRequest request) throws Exception {
		    // getting common parameters value from xml file.
		    EnvironForMenu env = new EnvironForMenu();
		    String collegename = (String)(((Vector)env.getList("collegenameforjasper")).elementAt(0));
		    String version = (String)(((Vector)env.getList("version")).elementAt(0));
		    String currentDt = (String)(((Vector)env.getList("whethercurrentdateispresentornot")).elementAt(0));
		    String pageNo = (String)(((Vector)env.getList("whetherpagenumberispresentornot")).elementAt(0));

		    parameters = new HashMap<String, Object>();

		    // common parameters from XML file(educonflist.xml)
		    parameters.put("collegename", collegename);
		    parameters.put("version", version);
		    parameters.put("pageNo", pageNo);
		    parameters.put("currentDt", currentDt);
		    parameters.put("hyperLinkDisplay", "yes");
		    parameters.put("FilePath", FilePath);
			
		    if(request.getParameter("type") != null){
		        if(!request.getParameter("type").equals("")) {
		            parameters.put("hyperLinkDisplay", "no");
		        }
		    }	
				
		    if(jrData.getParameters() != null && (jrData.getParameters()).size() != 0)
		        parameters.putAll(jrData.getParameters());

		}

}

  

please help me

Thanks in advance

Regards,
Mohan.M

[Ulf Dittmer]

at com.scholar.jr.common.EduJRController.doPost(EduJRController.java:271)

The code you posted seems to be missing something. What's happening in line 271?

[Bauke Scholtz]

mohanasundaram muthukannan wrote:
java.lang.IllegalStateException: Cannot forward after response has been committed
...
at org.apache.jsp.jr.jrcommonjsp.showJR_jsp._jspService(showJR_jsp.java:689)

You have a jsp:forward in your showJR.jsp file while the response is already committed before. This isn't going to work. Rearrange your code flow.